The OpenSees Community

Thanks Frank. But for using OpenSees in hybrid simulations, I guess you have to be able to control timesteps in simultaneous integration times between programs. How does OpenSees work there? Is there a way to keep OpenSees open during each analysis that is comunicated between multiple programs? Shou...

Hi all,

Does anyone know if there is a way from TCL to manually control time steps in OpenSees? In particular, can you step back a time step to re-try an analysis of the current time step?

Thanks
Amin

Hi I'm trying to do hybrid simulations with OpenSees and I would like to know if anyone has tried to put the transient analysis into a loop that can come back and forth between timesteps and probably change the data for some timesteps according to the iterations related to the results of some other ...

Hi

This website has lots of examples on those materials.
http://cyclic.ucsd.edu/opensees/

Thanks

Thanks for your help. I got it now. It's working properly like this: wipe; # Unit --------------------------------------------------------------------- # Force : KN # Length: m # -------------------------------------------------------------------------- # --------------------------------------------...

Thank you for your reply. I changed my code as you said, But it is not working. The constrain handler does not accept "plain". I changed it to other constrains but I'm still getting zero for all the outputs. I only have one value in the files "dispx", "dispY"... and I only need one value to be in th...

Hi all I have a cantilever column modeled and I want to apply 6 displacements in 6 directions at the free end of the column at once. The displacements are achieved from some other program in separate files (dispx.dat, dispy.dat,...). I have to get the reaction forces from opensees for the 6 directio...

Hi

In the pressure dependent and independent material you have $massdens, which is the density of soil.

nDMaterial PressureDependMultiYield 2 2 $massDen $G $B $fangle .1 80 0.5 \
$ptangle 0.17 0.4 10 10 0.015 1.0